document.getElementById('config-btn').onclick = function () {
    document.getElementById('show').classList.toggle('show');
}

document.getElementById('config-btn1').onclick = function () {
    document.getElementById('show').classList.toggle('show');
}

$('input').on('input invalid', function () {
    this.setCustomValidity('')
    if (this.validity.valueMissing) {
        this.setCustomValidity(" ")
    }
    if (this.validity.typeMismatch) {
        this.setCustomValidity(" ")
    }
    if (this.validity.patternMismatch) {
        this.setCustomValidity(" ")
    }
})